Samantha Harris feels Dancing with the Stars' ninth-season mirror ball trophy is up for grabs heading into tonight's semifinals performance episode.

"It's anyone's game," Harris told People on Saturday.

"The competition has picked up so much momentum in the past two weeks and now it's come down to the final four and the right final four."

Dancing with the Stars' remaining ninth-season couples are singer/actress Mya and her partner Dmitry Chaplin, former The Osbournes star Kelly Osbourne and her partner Louis van Amstel, actress Joanna Krupa and her partner Derek Hough, and entertainer Donny Osmond and his partner Kym Johnson.

During tonight's live semifinals performance episode, the four remaining couples will each dance three routines.

"I do not envy them at all," Dancing with the Stars eighth-season runner-up Melissa Rycroft told People.

"I'm so excited but I'm not nervous. I'm not being judged so it's all for fun. But I remember that feeling last season when I made it to the semifinals," added the former The Bachelor bachelorette, who will also perform during Tuesday night's live results show.  "I was so happy I made it, but I also knew how much hard work was ahead."

All of the four remaining finalists are preparing for the semifinals differently, according to People -- as Osmond is consuming lots of carbs, Osbourne had to get a shot in her toes, seventh-season champion Brooke Burke gave some pointers to Krupa and former partner Hough, and Mya has been taking power naps.

"Every year the finalists are amazing and this year is no different," Rycroft told People.